<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>helloWorld</title>
    <script src="../../vue.js"></script>
</head>
<body>
    <div id="app">{{content}}</div>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                content: 'hello world'
            }
        });

        setTimeout(() => {
            app.content = 'bey world'
        }, 2000);
    </script>
</body>
</html>